Scientific Method and Measurement

Flashcards based on lecture notes to help students review for an exam. Fill in the blank style.

_: Accuracy

represents how close a measurement is to the actual value

_: Precision

represents how close measurements are to each other

In the scientific method, purpose is to _.

state the problem

In the scientific method, research is to _.

find out about the topic

In the scientific method, hypothesis is to _.

predict the outcome to the problem

In the scientific method, experiment is to _.

develop a procedure to test the hypothesis

In the scientific method, analysis is to _.

record the results of the experiment

In the scientific method, conclusion is to _.

compare the hypothesis to the experiment’s conclusion

The scientific method of inquiry is _.

a way to reduce the amount of uncertainty about a problem rather than a set of steps to follow blindly

A good experiment has at least one _, which changes based on an independent variable.

dependent variable

Controlled variables are _.

variables that are held constant or unchanging

Controlled variables are used to _.

ensure that the experiment is giving the data expected

A positive control is a _.

sample or measurement that is expected to show some sort of result

A negative control is a _.

sample or measurement that is expected to show no result

In the United States the _ of measurement is standard.

imperial system

In the rest of the world and the scientific laboratory, the _ is standard.

metric system

How close is a measured to the actual value?

Accuracy

How close are measurements to each other?

Precision

The first step in the scientific method is _.

stating the problem

After stating the problem in the scientific method, you _.

researching the topic

After researching the topic in the scientific method, you _.

forming a hypothesis

After forming a hypothesis in the scientific method, you _.

experimenting

The step after experimenting results in the scientific method is _.

analysis

The final step of the scientific method is to draw a _.

conclusion

The scientific method is a process of _.

uncertainty reduction

A variable that changes based on another variable is called _.

dependent

The dependent variable changes according to the _ variable.

independent

Controlled variables are meant to remain _.

constant

A positive control should give an _.

expected result

A negative control should give _.

no result

The imperial system of measurement is standard in the _.

United States

The _ is used in most of the world and in scientific settings.

metric system

A constant repeating set of steps in needed in the _.

scientific method

deals with how close something is?

Accuracy deals with closeness.

The scientific method of inquiry reduces____?

Uncertainty

Which variable is changed in the experiment _?

dependent variable

two different controls used in the experiment _.

positive and negative control

Keeps the experiment constant and precise_.

controlled variable

What is the labarotory system _?

metric system

How does a lab control an experiment _?

standard unit of measurement